WO2020193417A1

WO2020193417A1 - Reclosable drinking closure

Info

Publication number: WO2020193417A1
Application number: PCT/EP2020/057811
Authority: WO
Inventors: Günter Krautkrämer
Original assignee: Bericap Holding Gmbh
Priority date: 2019-03-26
Filing date: 2020-03-20
Publication date: 2020-10-01
Also published as: DE102019107700A1

Abstract

The invention relates to a reclosable drinking closure (100, 100') for a beverage bottle having: an outer part (101, 101'), which has a lower fastening section (10, 10') which holds the drinking closure in place on a bottle neck of the beverage bottle and an upper lid section (20, 20'), the lid section (20, 20') being connected to the fastening section (10, 10') via a hinge (21) such that the lid section can pivot from a closed position into an open position; and an inner part (102), which has a pouring spout (30) with a drinking opening (31) and a seal edge (32), the seal edge (32) being connectable to the opening edge of the beverage bottle such that the pouring spout (30) forms a fluid connection between the interior of the beverage bottle and the drinking opening (31), the inner part (102) being situated inside the outer part (101, 101') such that the lid section (20, 20'), when in the closed position, surrounds at least one section of the pouring spout (30) in the manner of a protective cap and closes the pouring spout (30). According to the invention, to improve the guarantee function of the drinking closure, the outer part (101, 101') has a guarantee tab (11, 11'), which is articulated in a radially pivotable manner to either of the sections constituted by the fastening section (10, 10') or lid section (20, 20') and, before opening for the first time, is held at a small distance on the other section by means of an easily tearable connection (14, 14'), the guarantee tab (11, 11') being preloaded such that, after opening for the first time and the associated severing of the easily tearable connection (14, 14'), it pivots in the radial direction under the influence of the preloading, and the small distance from the other section in the closed position is increased to a clearly visible gap (4, 4').

Description

Resealable drinking cap

The present invention relates to a resealable drinking cap for a beverage bottle, with an outer part which has a lower fastening portion which holds the closure on egg nem bottle neck of the beverage bottle, and an upper lid portion, the lid portion via a hinge from a closed position in a open position is pivotally connected to the fastening portion, and with an inner part which has a pouring spout with a drinking opening and a sealing edge which can be connected to the opening edge of the drinks bottle, the pouring spout forming a fluid connection between the interior of the drinks bottle and the drinking opening, and wherein the inner part is arranged within the outer part in such a way that the cover section in the closed position surrounds at least a section of the pouring spout in the manner of a protective cap and closes the pouring spout.

Such a drinking cap is described, for example, in WO 2017/025692 A1.

The fastening section of the outer part is used to fix the pouring spout, which is also referred to as a drinking insert or in English as a spout, and the closure as a whole on the bottle neck.

Such drinking caps are also referred to as “sport caps” and are usually attached to drinking bottles from which a consumer or user of the drinking bottle can drink directly. The term "Sportscap" comes from the fact that such closures and drinking bottles are often used during sporting activities, e.g. Cycling and hiking, are carried along, whereby the user can hold the drinking bottle with one hand and lift off the lid section with a finger of the same hand, the mouth or the teeth or fold it up over a hinge and then drink from the pouring spout thus exposed, without for example, to use the other hand that controls a vehicle, for example.

The drinking bottles typically have a cylindrical bottle neck with or without an external thread and the pouring spout of the inner part is usually on the edge of the bottle neck placed and typically sealed against the inside of the bottle neck, while the fastening section engages around the bottle neck together with the inner part placed on it and, for example, engages with an external thread on the bottle neck and thus holds the inner part and thus the entire drinking cap on the bottle neck. The fastening section then has a corresponding internal thread, but snap-edge connections between the beverage bottle and the drinking cap or fastening section would also be conceivable.

A basic distinction must be made between refillable drinking bottles that are filled by the consumer themselves and drinking bottles that are sold with a certain content, for example an isotonic fruit juice and / or sugar solution, which is particularly useful for longer sporting activities and endurance sports Athletes are often used to take in fluids, salts and carbohydrates in good time before an otherwise impending decline in performance.

Drinking caps that are used for beverage bottles filled by the manufacturer in this way generally have a so-called guarantee function, i.e. The outside of the closure can be seen to determine whether it has already been opened or is still unopened, so that it is ensured that the content is unadulterated and corresponds exactly to what the manufacturer and bottler filled and which is described accordingly on a label on the bottle.

Corresponding guarantee elements are usually easily tearable connections between the cover section and the fastening section, which tear when the cover section is folded up to reveal the drinking opening, the cover section remaining connected to the fastening section via a hinge. These easily tearable connections, which serve as guarantee elements, must therefore be arranged in an area outside the hinge between the cover section and the fastening section. As a rule, they are arranged diametrically opposite the hinge between the fastening section and the cover section.

In contrast to conventional screw caps, which are connected to bottle necks and which have a so-called tamper-evident band on the lower edge of a cap shell, the fastening section remains in the same position even after the easily tearable connections have been separated as before the closure was opened. In contrast, with a conventional closure, the tamper-evident band tears off completely and can slide down a little along the bottle neck, so that with a conventional closure a clear gap remains between the tamper-evident band and the lower edge of the cap shell after it is opened for the first time. However, since the lower fastening section remains in its position with a drinking cap and the lid section is also folded back into its original position after use, there is no significant distance between the lower edge of the lid section and the upper edge of the fastening section, even outside the hinge would differ from the distance before first opening; That is to say, the distance between the cover section and the fastening section, even before the first opening, remains essentially the same. Only the easily tearable connections are separated, but remnants of these connections can still remain and under certain circumstances give the illusion of a still existing connection. For the consumer, therefore, it is only possible to see if the closure has been opened once and can thus fulfill the desired guarantee function if it looks very closely. The easily tearable connections represent at most a tactile but not easily visible assurance of originality.

Compared to this prior art, the present invention is based on the object of creating a resealable drinking cap of the above-mentioned type in which it is easily visible at any time after the first opening that this drinking cap has already been opened.

This object is achieved in that the outer part has a guarantee tab which is articulated radially pivotable on one of the sections, fastening section or cover section and which is held at a first distance from the other section by an easily tearable connection prior to opening for the first time is, but the guarantee tab is so under tension that after the initial opening and the associated separation of the easily tearable connection under the influence of this bias in ra dialer pivoted and the first distance of the guarantee tab to the other section in the closed position again increases to a second distance, so that a gap that extends in the radial direction and is larger than the previous state is created between the guarantee tab and the respective other section.

The limitation of this guarantee function to a guarantee flap that extends only along a small part of the circumference of the drinking cap has the advantage that such a guarantee flap can be designed to be relatively easy to move radially, in contrast to the circumferential edge areas of the cover section and outside this guarantee flap Fastening section that are inevitably close to each other when the drinking cap is closed. However, the radially protruding guarantee tab ensures that at least in one segment of the circumference there is a clear distance between the guarantee tab and the section previously connected to the guarantee tab via at least one easily tearable connection. The guarantee tab could optionally be provided either on the cover section or on the fastening section. The guarantee tab can be linked to the cover or to the fastening section via a film hinge, which can also be interrupted. The easily tearable connection is preferably an axial connection and is arranged axially opposite the film hinge.

Since the guarantee tab is hinged to one of the two parts, the cover section and / or the fastening section, i. is articulated to this part and is otherwise under radial pretension, it must necessarily pivot under the influence of the pretension in the radial direction after the easily tearable connection has been separated, so that a greater radial distance between those parts of the guarantee tab which were previously over easily tearable Connections were connected to the other part, from the corresponding part of the other section.

From a practical point of view it is easiest to give the guarantee flap a biasing radially outwards so that the free end of the guarantee flap is removed from the closure, i. from the outside of the fastening section and the cover section, folds away radially outward.

In one embodiment, this radial prestress is generated by a radius that is enlarged in at least one circumferential section on the outside of the inner part, which is opposite the guarantee tab. Alternatively, a radially outwardly directed prestressing of the guarantee tab is generated by an area on the inside of the guarantee tab which has a smaller radius (relative to the radius of the opposite inner section). The at least locally enlarged outer radius of the inner part or the smaller inner radius of a section of the guarantee tab, when the outer part and inner part are assembled, cause the guarantee tab and an opposing section of the inner part to engage with one another in the area of the diameter difference, generating the radial prestress.

In one embodiment, the transition area from the guarantee tab to the section to which the guarantee tab is hinged has a smaller wall thickness than the areas of this section and the guarantee tab adjoining the transition area, so that a film hinge (a film hinge ) is provided, which allows the guarantee tab to be pivoted radially. A film hinge should be understood to mean both a continuous area of lesser wall thickness, that is to say a continuous film hinge, and an area of lesser wall thickness interrupted by gaps, that is to say several film hinge sections separated by gaps. According to one embodiment, the preload is generated in that the guarantee tab of the outer part has a bead protruding radially inward, in the direction of the longitudinal axis. The longitudinal axis is defined jointly by the bottle neck and the fastening section. The bead can in particular be designed as an area of the guarantee tab which is a section bent radially inward through the guarantee tab in axial cross section, preferably in the vicinity of the film hinge which permanently connects the guarantee tab to the cover section or the fastening section. The bead must protrude inward so far that the radial distance of the bead from the longitudinal axis (radius) is smaller than the radial distance from the longitudinal axis (radius) of the area of the outer part directly opposite the bead. The bead and the section opposite it are then pressed together while generating an elastic pretension, so that a radially outwardly directed compressive force acts on the bead and thus on the guarantee tab.

In one embodiment, the guarantee tab is hinged to the upper edge or in the vicinity of the upper edge of the fastening section and received in a corresponding, matching recess on the lower edge of the cover section, the easily tearable connections to the cover section at positions of the guarantee tab remote from the film hinge are arranged, for example on the free edge of the guarantee tab facing away from the film hinge or at least in the vicinity thereof.

The bottle neck and the fastening section generally define a common longitudinal axis, the minimum distance between the guarantee tab and the respective other section in the closed position of the cover section in a cross-sectional plane containing this longitudinal axis and a point on the guarantee tab, which does not run through an easily tearable connection the initial opening is at least 1.5 times, preferably 1.8 times to 3 times greater than in the closed position of the cover section before the first opening.

In one embodiment, the guarantee tab is an elongated, rectangular band in a top view, which has a height H and a width B, the width B being measured in the circumferential direction of the drinking closure and the height H in the closed position before the first opening parallel to the longitudinal axis is measured. The width of the guarantee tab is greater than the height and preferably 2 to 5 times and particularly preferably 3 to 4 times greater than the height H. The circumferential angle over which the guarantee tab extends, ie the width, should not be significant make up more than 30 ° of the circumferential angle and could also be a little less, in order not to make the radial outward folding away of the guarantee flap unnecessarily difficult, since the guarantee flap runs along an arc and its free edge when folded over outwards necessarily comes under tensile stress, while the film hinge comes under compressive stress. These corresponding prestressing forces have to be overcome by the radially outwardly directed prestressing between the bead and the opposite section when the cover section is separated from the fastening section for the first time.

In one variant, the guarantee tab has a height of at least 3 mm, preferably at least 5 mm and a circumferential extension between 5 ° and 45 °, preferably between 5 ° and 30 ° and particularly preferably between 10 ° and 20 ° in the circumferential direction.

The angle by which the guarantee flap tilts can be detected, for example, by looking at a central, axially parallel line that extends from the film hinge to the edge of the guarantee flap facing away from the film hinge before it is opened for the first time, and the position of this line after the first opening Angle should be at least 5 °, but could also be significantly larger, for example in a range from 15 ° to 45 ° and in particular in a range from 20 ° to 30 °. The guarantee tab is arranged in a recess which is provided either in the lower edge of the cover section or in the upper edge of the fastening section or in both opposing edges of the cover section and fastening section. This applies regardless of which of the parts, cover section or fastening section, the guarantee tab is hinged to, i. has a hinge connection with the part concerned. The easily tearable connection preferably consists of one or more easily tearable bridges or webs. These are particularly preferably provided on the edge of the guarantee flap facing away from the film hinge, but at least preferably in the vicinity of this edge on side edges of the guarantee flap.

In a variant, the expediently one-piece inner part is designed so that it can be placed tightly on a bottle neck edge and extends upwards from the bottle neck with its pouring spout and the drinking opening.

The seal with respect to the bottle neck can be formed on the one hand by a flange edge that can be placed on the front side of the bottle neck edge and on the other hand by a sealing plug extending into the bottle neck from the lower end of the inner part or from the flange. The pouring spout can have a central, somewhat tapered drinking opening through which the free bottle neck diameter is reduced in order to facilitate direct drinking from the closure, more precisely from the pouring spout and the drinking opening of the opened closure. According to one embodiment of the invention, the outer part and the inner part have different, mutually contrasting colors. This applies in particular to the guarantee tab of the outer part and the adjacent parts, being due to the contrasting Colors a gap formed between the guarantee tab and the cover section or fastening section can be seen more easily and clearly.

Since the guarantee tab is held at the same time because of the easily tearable connections both on the fastening section and on the cover section before it is opened for the first time, the holding force of the easily tearable bridge (s) can only be compensated by an elastic change in shape of at least one section of the guarantee tab. For example, a guarantee tab, which had a curved shape in the non-assembled state of the outer part and inner part, is brought into an approximately flat shape by the holding force. Because of the change in shape, the guarantee tab has an internal mechanical tension, which results in a force acting radially outward. The guarantee tab is thereby under a radially outwardly directed prestress.

If the easily tearable connections now tear, the internal tension of the guarantee tab is released as far as possible, in that the guarantee tab assumes its original shape, here for example the curved shape. This creates a clearly visible gap between the guarantee tab and the section that was connected to the guarantee tab via the easily tearable connections.

The guarantee tab is preferably made from a material with a memory effect. The guarantee tab is particularly preferably made of polypropylene. Due to the memory effect, an internal mechanical tension in the guarantee tab, the elastic pretension, remains for a long period of months and years. This ensures that the closure maintains the required pretensioning of the guarantee tab at least until the expiry date of the beverage that is located in the bottle closed by the closure.

The entire outer part is particularly preferably formed from a material with a memory effect, in particular from polypropylene.

Particularly preferably, a guarantee tab made of a material with a memory effect has a bead which is formed radially inward by a curved shape of the guarantee tab, the area of the bead being smaller than the area of the guarantee tab. In this embodiment, the outwardly acting force resulting from the internal mechanical tension of the guarantee tab acts only on the smaller bead surface. This advantageously increases the memory effect. Further advantages, features and possible applications of the present invention will become clear from the following description of a preferred embodiment and the associated figures. Show it:

Figure 1 is a front view of a first embodiment of a drinking closure according to the present invention in the unopened state with a guarantee tab, which is connected to the lid section via two easily breakable bridges,

FIG. 2 shows a sectional view through the closure according to FIG. 1 with a sectional plane containing the closure axis perpendicular to the paper plane of FIG.

FIG. 3 shows a front view of the closure corresponding to FIG. 1 in the closed state, but after it has been opened for the first time,

FIG. 4 shows a sectional view corresponding to FIG. 2 in the state according to FIG. 3,

FIG. 5 shows a side view of the closure in the state according to FIG. 3 and

Figure 6 is a view of the closure of Figures 3 to 5 from above,

FIG. 7 shows a front view of a second embodiment of a drinking closure according to the present invention in the unopened state with a guarantee tab before the closure is opened for the first time,

FIG. 8 shows a sectional view through the closure according to FIG. 7 with a sectional plane containing the closure axis in the paper plane of FIG.

FIG. 9 shows a side view of the closure in the state according to FIG. 7,

FIG. 10 shows a front view of the closure corresponding to FIG. 7 in the closed state, but after it has been opened for the first time,

Figure 11 shows a sectional view corresponding to Figure 8 in the state according to Figure 10,

FIG. 12 shows a view of the second embodiment of the closure from above.

First, the unopened closure will be described with reference to FIGS. 1 and 2. The drinking cap, here referred to as “cap 100” for short, consists of an outer part 101 and an inner part 102, the outer part 101 in turn having two different sections, namely a fastening section 10 and a cover section 20.

As can be seen from the sectional view of Figure 2, the fastening section 10 is designed with its radially outer part in the manner of a closure cap and has a cap shell 18 with an internal thread 19, as well as an upper, inwardly protruding flange 18a, which is provided for the to press underlying, flange-like sealing edge 32 onto a bottle neck and hold it. A cylindrical sealing plug 33 engages in a bottle neck opening and seals the inner part 102 on the inner wall of a bottle neck (not shown here) with a bead projecting radially outward. The fastening section 10 also has a circumferential guarantee strip 15 at its lower end, which is designed as a flex strip and has an outer guarantee strip section 16 and a flex strip section 17 which is folded over inside. It is therefore also not possible to unscrew the closure 100 as a whole from the bottle neck without leaving clearly visible traces.

The cover section 20 is connected to the fastening section 10 via a hinge 21 on the side diametrically opposite the guarantee tab 11, which is not visible in FIG. This hinge 21 can in particular be a bistable hinge which, after the cover section has been folded up and over the hinge 21 to the rear, holds the cover in this open, folded position. The guarantee tab is in this Fig. 1 diametrically opposite the hinge. That doesn't have to be the case, of course. If you bring this guarantee flap into a position that is offset by approx. 90 ° to the hinge, the unfolding of this guarantee flap becomes more visible after the first opening. It is even more important that in the approx. 90 ° position the tearable webs on this guarantee tab can be made thicker / stronger because the lever when tearing open in the 90 ° position is significantly larger than in a position below the point where the tearing force is applied .

The essence of the invention, however, lies in the guarantee tab 11, which in the plan view according to FIG remote corners via easily breakable bridges 14 with the cover portion 20 verbun are the. As can also be seen, the guarantee tab 1 1 extends into two recesses, one of which is provided on the lower edge of the cover portion 20 and the other on the upper edge of the fastening portion 10.

Outside the cover hinge 21, the fastening section 10 and the cover section 20 are designed as hollow cylinders with the same diameter in the directly opposite areas, which are only separated from one another by a narrow gap 4, which is barely noticeable when the closure is unopened, but which is in the enlarged figures and for the purpose of explanation is emphasized more clearly. This gap 4 is also reproduced in the area between the guarantee tab 11 and the recess 25 of the cover section 20 and is only bridged by the two easily breakable bridges 14. As can be seen in particular in Figure 2, the guarantee tab 11 by the two bridges 14, even if they are not visible in the sectional plane shown in Figure 2, tightly fitting to the outside of the inner part 102, or the pouring spout 30 of the inner part 102 held. It can also be seen that the guarantee tab 11 immediately above a transition area to the fastening section 10, which acts as a film hinge 13, has a radially inwardly protruding projection 12 which, when the lock is fully assembled, engages firmly with the outside of the inner part 102 occurs and thereby causes a bias acting on the guarantee tab 1 1 radially outward. As soon as the two easily tearable bridges 14 have been separated, the guarantee tab is there

1 1 of this radial bias and tilts over the film hinge 13 radially outward. This state of the closure is shown in FIGS. 3 to 6, whereby one can see in particular in FIG. 4 the tilting of the guarantee tab 11 by approx. 20 ° to 25 ° compared to the previous state.

This leads to the gap 4 now being much more clearly visible in the area of the guarantee tab 11 than previously the gap 4 in a state before it was opened for the first time. The difference is less evident in the figures shown here, since the gap 4 is shown here relatively wide, even in the unopened state. In fact, the visible gap between the upper edge of the guarantee tab 1 1 and the opposite edge of the recess in the cover section 20 increases by at least 1.5 times as a result of the tilting of the guarantee tab 1 1, although this enlargement is also easily 1.8 - can be up to 3 times or more. In particular, in Figure 5 it can be seen that the guarantee tab 11, which is otherwise flush within the cylindrical circumference of the cover section, protrudes clearly radially outward from this cylinder surface, so that the user can relatively easily and quickly recognize that the closure has already been at least once opened and then closed again. In conventional drinking closures of this type, as disclosed, for example, in WO 2017/025692 A1, the gap 4 between the lid section 20 and the fastening section 10 outside the circumferential area claimed by the hinge 21 is essentially the same before and after the initial opening and reclosing A lack of connection via the easily tearable bridges, of which residues often remain, is very difficult to identify with conventional closures and through careful inspection.

The closure according to the invention thus offers a significant improvement in the guarantee function, i. E. the possibility of recognizing whether a closed closure has already been opened at least once before.

A second embodiment of the drinking closure according to the invention is shown in FIGS

12 shown. Insofar as individual parts of the second embodiment are identical to those of the first embodiment, the same reference numbers are used. If there are small differences between analog parts, the same numbers are used, but with a dash.

This second version, which is referred to as closure 100 ″, also consists of an outer part 10T and an inner part 102 ', the outer part 10T again having two different sections, namely a fastening section 10' and a cover section 20 '. The difference to the first version of the closure 100 is the arrangement of the tab 1 T, which, in contrast to the first version, is not on a side diametrically opposite the hinge 21, but only offset by approx. 90 ° to the hinge 21 on the periphery of the fastening section 10 'is arranged. In FIG. 7, which corresponds to the front view of FIG. 1, the tab 1 T can therefore be recognized by a perspective-related slight radial protrusion on the left edge of the cover section 20 '.

The cover section 20 ‘is also connected to the fastening section 10‘ outside of the tab 1T by additional easily breakable bridges 14 ″.

Incidentally, the laterally arranged tab 1 T is hinged along its lower edge to the fastening section 10 ‘and connected with its upper edge by easily breakable bridges with the edge of a lateral recess 25‘. The radially outwardly directed bias of the tab 1 1 1 is brought about in this case by a central, inwardly curved area 12 ‘of the tab 1 T, which is best seen in the central view of the tab 1 T cut through according to FIG.

All other details, in particular the inner part 102, the design of the fastening portion 20 'with internal thread and tamper-evident band and also the outer shape of the cover portion, apart from the arrangement of the recess 25', are identical to the details of the first embodiment.

The functioning of the second embodiment is essentially the same as that of the first embodiment. As long as the tab 1 T is held by the easily breakable bridges 14 in a position aligned with the jacket of the cover section 10 ‘, it can be seen that the closure has not yet been opened. As soon as the easily breakable bridges 14 'are separated, the prestressing caused by the contact of the central area 12' of the tab 1 T on the inner part 102 ensures that the tab folds outwards around its lower pivot point and thus shows a clearly visible gap 4 'between the upper edge of the tab 12' and the edge of the recess 25 '.

This shows the consumer more clearly than the known embodiments of drinking closures that the closure has been opened at least once. List of reference symbols

4 gap

4 ‘Gap after first opening and reclosing

10 10 mounting section

1 1 1 1 Guarantee tab

12 12 head start

13 Transition area / film hinge

14, 14 ‘Easily tearable connection

15 Guarantee tape

16 Outer section of the guarantee tape

17 Inner section (flex tape section of the guarantee tape)

18 coat

18a bottle rim

19 internal thread

20 20 cover section

21 hinge

22 Upper headstock

23 cylindrical stoppers

24 actuating lug

25, 25 ‘recess

30 pouring spout

31 Drinking mouth

32 sealing edge

33 sealing plugs

50 longitudinal axis

100, 100 ‘drinking cap

101, 101 ‘outer part

102 inner part

104 gap

B width

H height

Claims

Patent claims

1. Resealable drinking cap (100, 100 ‘) for a beverage bottle

with an outer part (101, 10T),

which has a lower fastening section (10, 10), which holds the drinking cap on a bottle neck of the beverage bottle, and an upper lid section (20, 20 ‘),

wherein the cover section (20, 20) is connected to the fastening section (10, 10 ‘) such that it can pivot from a closed position into an open position via a hinge (21), and

with an inner part (102),

which has a pouring spout (30) with a drinking opening (31) and a sealing edge (32), the sealing edge (32) being connectable to the opening edge of the beverage bottle in such a way that the pouring spout (30) creates a fluid connection between the interior of the beverage bottle and the Forms drinking opening (31),

wherein the inner part (3) is arranged within the outer part (2) in such a way that the lid section (20, 20 ‘) in the closed position surrounds at least a section of the pouring spout (30) like a protective cap and closes the pouring spout (30),

characterized in that

the outer part (101, 10T) has a guarantee tab (1 1, 1 T) which is articulated radially pivotable to one of the sections, fastening section (10, 10 ') or cover section (20, 20') and before it is opened for the first time the other section is held at a first distance from it by an easily tearable connection (14, 14 '),

wherein the guarantee tab (1 1, 1 T) is pretensioned in such a way that after the initial opening and the associated separation of the easily tearable connection (14, 14 ') it pivots outward under the influence of the pretension in the radial direction and the first Distance to the respective other section in the closed position increases to a second distance, so that an axial and radial gap is created between the guarantee tab and the respective other section.

2. Reclosable drinking closure (100, 100 ') according to claim 1, characterized in that the radial pretensioning is achieved by a radius (12, 12') on the outside of the inner part (102) which is at least partially enlarged in the circumferential direction, which the guarantee tab (1 1 , 1 T), or by an area with a relatively smaller Radius on the inside of the guarantee tab (1 1, 1 1 ') is generated, the larger or the smaller radius (12, 12') when the outer part (101, 101 ') and inner part (102) are each combined with a radial opposite region of the respective other portion engages in order to generate the radial prestress.

3. Reclosable drinking cap (100, 100 ') according to one of the preceding claims, characterized in that the transition area (13) from the guarantee tab (1 1, 1 T) to the section on which the guarantee tab (1 1, 1 T) is hinged, has a smaller wall thickness than the areas of this section adjoining the transition area (13) and the guarantee tab (1 1, 1 T).

4. Reclosable drinking cap (100, 100 ‘) according to claim 3, characterized in that the transition area (13) forms a hinge for the pivoting movement of the guarantee tab (1 1, 1 T).

5. Reclosable drinking cap (100, 100 ') according to one of the preceding claims, wherein the bottle neck and the fastening section define a common longitudinal axis, characterized in that in one the longitudinal axis (50) and a point of the guarantee tab (1 1, 1 T) including cross-sectional plane that does not run through an easily tearable connection, the minimum distance between the guarantee tab (1 1, 1 T) and the respective other section in the closed position of the Deckelab section (20, 20 ') after first opening at least 1 , 5 times and preferably 1.8 times to 3 times greater than in the closed position of the cover section (20, 20 ') before it is opened for the first time.

6. Reclosable drinking closure (100, 100 ') according to one of the preceding claims, characterized in that the guarantee tab (1 1, 1 1') is an elongated, rectangular band in a plan view, which has a height (H) and a width (B), the width (B) being measured in the circumferential direction of the drinking fastener (100, 100 ') and the height (H) in the closed position before the first opening being measured parallel to the longitudinal axis (50), the width (B) the guarantee tab (1 1, 1 T) is greater than the height (H) of the guarantee tab, the width (B) preferably two to five times and particularly preferably three to four times greater than the height (H).

7. Reclosable drinking cap (100, 100 ') according to claim 6, characterized in that the guarantee tab (1 1) has a height (H) of at least 3 mm and preferably of at least 5 mm.

8. Reclosable drinking cap (100, 100 ') according to one of the preceding claims, characterized in that the guarantee tab (1 1, 1 1') over a circumferential angle of 5 ° to 45 °, preferably from 5 ° to 30 ° and particularly preferably extends from 10 ° to 20 °.

9. Reclosable drinking cap (100, 100 ') according to one of the preceding claims, characterized in that a central axially parallel line on the guarantee tab (1 1, 1 T) before the first opening with the same line on the guarantee tab (1 1, 1 T) after the initial opening encloses an angle which is in a range from 5 ° to 90 °, preferably in a range from 15 ° to 45 ° and particularly preferably in a range from 20 ° to 30 °.

10. Reclosable drinking closure (100, 100 ') according to one of the preceding claims, characterized in that the section to which the guarantee tab (1 1, 1 1') is hinged has a first recess in which the guarantee tab (1 1, 1 T) is arranged at least in sections, and the guarantee tab (1 1, 1 T) protrudes in the axial direction over the section and into a further recess of the respective other section, which is opposite the first recess, protrudes.

1 1. Reclosable drinking cap (100, 100 ‘) according to one of the preceding claims, characterized in that the easily tearable connection (14, 14‘) consists of one or more easily tearable, rod-shaped webs.

12. Reclosable drinking cap (100, 100 ‘) according to one of the preceding claims, characterized in that the outer part (101, 10T) and the inner part are each made in one piece by injection molding.

13. Reclosable drinking closure (100, 100 ') according to one of the preceding claims, characterized in that at least the guarantee tab (1 1, 1 T) and preferably the entire outer part (101, 10T) one to the color of the inner part (102) Contrasting color.